def test_append_block_1(self):
"""Should add the expected block."""
bc = Blockchain()
block = bc.forge_block([])
bc.append_block(block)
assert_that(bc.chain[1], is_(equal_to(block)))
def test_append_block_0(self):
"""Should add a block to the chain."""
bc = Blockchain()
block = bc.forge_block([])
bc.append_block(block)
assert_that(len(bc.chain), is_(2))
def get(self):
blockchain = Blockchain()
blockchain.forge_block([])
# print(b.__hash__())
self.response\
.write('Chan#1: {} ------> Chain#2: {} ------ |'
.format(blockchain.chain[0].__str__(),
blockchain.chain[1].__str__()))
def test___init___4(self, genesis):
"""Should call Block.genesis."""
Blockchain()
genesis.assert_called_once()
def test___init___3(self):
"""The first element of the chain should not have a previous hash."""
new_bc = Blockchain()
assert_that(new_bc.chain[0].previous_hash, is_(equal_to(None)))
def test___init___2(self):
"""Should set a Block instance as the first element of the chain."""
new_bc = Blockchain()
assert_that(new_bc.chain[0], is_(instance_of(Block)))
def test___init___1(self):
"""Should have a chain of length == 1."""
new_bc = Blockchain()
assert_that(len(new_bc.chain), is_(equal_to(1)))
def test___init___0(self):
"""Should have a chain property."""
new_bc = Blockchain()
assert_that(new_bc.chain, is_(not_none()))
def setUp(self):
self.blockchain_0 = Blockchain()
self.blockchain_1 = Blockchain()
from flask import Flask, jsonify, request, redirect
from coursechain.blockchain import Blockchain
app = Flask(__name__)
app.config['JSONIFY_PRETTYPRINT_REGULAR'] = True
blockchain = Blockchain()
@app.route('/blocks')
def blocks():
return jsonify([block.to_serializable() for block in blockchain.chain[:50]]) # limit results
@app.route('/mine', methods=['POST'])
def mine():
transactions = request.form['transactions']
blockchain.mine(transactions)
return redirect('/blocks')